Hmm... All these isekai op-ness kinda got me thinking, what if many of the prodigies/genius kids/low-profile billionaires in real life actually retain some amount of knowledge/memories/mental age/recognition and processing proficiency from their past life/lives, and some even have non-Earthling or future past life/lives, but most are just disguised as being prodigious/genius or hidden by the gov or secret organisations?